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  1. #1626

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    RE: Flyeagle F18F

    Hi,

    When measuring the 25mm for the aileron, you do it from the tip or from the inner (towards the fuselage) of the aileron?

    Regards

    Joseph

  2. #1627
    olnico's Avatar
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    RE: Flyeagle F18F


    ORIGINAL: salibaj

    Hi,

    When measuring the 25mm for the aileron, you do it from the tip or from the inner (towards the fuselage) of the aileron?

    Regards

    Joseph
    Hi Joseph,

    I assume that you are talking about aileron throw. In that case, 25 mm is way too much.

    I am flying with +- 16 mm at the tip.
    Elevator is 32 mm for pitch down, 47 mm for pitch up at the root.

    Elevator offset for the flaps is very small ( 5 mm )
    Oli.

  3. #1628

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    RE: Flyeagle F18F

    Hi Oliver,

    Yes, I am referring to aileron throw. Thank you for your settings. You know that the aileron is narrow at the tip and goes wide towards the fuselage. Now, if you measure the tip you get a result, for example 16mm, but if you measure towards the fuselage it is more, because the aileron is wider there, am I correct?

    I take it that you measure it at the tip (outside) of the wing.

    As you refered to the elevator, from the root, I understand it from the inner part towards the fuselage, and the leading edge, as usually this was also mentioned to correct the neutral position of the elevator.

    Thank you
    Regards

    Joseph

  4. #1629
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    RE: Flyeagle F18F

    Yes, you're all correct, Joseph.
    Oli.

  5. #1630

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    RE: Flyeagle F18F

    nealy finished my f18 now, cheers olnico for the work u have put in on this thread didnt no it was u writing the articals in the jet mag keep up the good work
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  6. #1631
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    RE: Flyeagle F18F

    You're welcome Alan.
    What takeoff weight do you get ?
    Oli.

  7. #1632

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    RE: Flyeagle F18F

    I havnt done the c/g yet im hanging some scales in the garage in the week i will let u no then i weighed it last week before i put the engine and pipe in it was 28lb it had all the everything else in except batteries

  8. #1633

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    RE: Flyeagle F18F

    Hi Oli,

    Have you ever put that article on how to balance the stabs please?

    Alan,

    I think your model is coming `light'! Congrat on the build

    Regards

    Joseph

  9. #1634

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    RE: Flyeagle F18F

    its a good job its come in light as its got a merlin 160 in. I have done nothing but read about balancing i no a few people now who have this plane some have and some havnt and they all fly nice but the forces that are applied to this control surface but big strain's on the servo. Its a mine field on this subject

  10. #1635
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    RE: Flyeagle F18F


    ORIGINAL: salibaj

    Hi Oli,

    Have you ever put that article on how to balance the stabs please?

    Alan,

    I think your model is coming `light'! Congrat on the build

    Regards

    Joseph
    Yes.
    Have a look at RCJI.
    Oli.

  11. #1636

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    RE: Flyeagle F18F


    ORIGINAL: olnico


    ORIGINAL: salibaj

    Hi Oli,

    Have you ever put that article on how to balance the stabs please?

    Alan,

    I think your model is coming `light'! Congrat on the build

    Regards

    Joseph
    Which RCJI issue?

    Joseph

    Yes.
    Have a look at RCJI.

  12. #1637
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    RE: Flyeagle F18F

    The current one, page 48 to 51.
    Oli.

  13. #1638

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    RE: Flyeagle F18F

    Thank you Oli

  14. #1639

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    RE: Flyeagle F18F

    could u tell me what servo's are being put on the ali plate for the steering

  15. #1640

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    RE: Flyeagle F18F

    has anyone put any mixing ali/elivator on the f18

  16. #1641
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    RE: Flyeagle F18F

    No, keep it as simple as possible.
    Oli.

  17. #1642

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    RE: Flyeagle F18F

    cheers oli im off to dubai the end of august for hols

  18. #1643

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    RE: Flyeagle F18F

    nealy ready for first flights just tryed the gear doors and gear some times one of the main gear bounces slightly off lock and causes the rest not to come down just what u want.Want it workin perfect before first flight i no i have seen it some were on here

  19. #1644
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    RE: Flyeagle F18F

    Hello Guy's
    Want to show the Hawe gear for Fej F-18 1/7 and 1/6!
    This gear is rock stable no more worries

    for more info just pm!
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    www.hpvjets.nl

  20. #1645

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    RE: Flyeagle F18F

    that hawe gear looks nice where was they made and do they have a website ? just done the c/g and it came out at 38.5lbs hope this merlin will power it ok

  21. #1646
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    RE: Flyeagle F18F


    ORIGINAL: alanjets

    that hawe gear looks nice where was they made and do they have a website ? just done the c/g and it came out at 38.5lbs hope this merlin will power it ok

    Sure they have!

    http://www.hawe-modellbau.de/english/

    regards, Henk
    www.hpvjets.nl

  22. #1647

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    RE: Flyeagle F18F

    Check it out, my mate from xtremehobby.com.au has just finished the video from last weekend at the Jets over Fraser Coast in Maryborough Queensland Australia.
    Its my new toy and just lov'in it.

    www.youtube.com/watch
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    Chris \"Slick\" Dawson - www.Ausjets.com www.xtremehobby.com.au
    Australian Jet Central Flight Team Member

  23. #1648
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    RE: Flyeagle F18F

    Hello Guys,

    I reorganized my ftp and that dropped some of the links to my pictures. So here is the tutorial about the flex plates with the pictures again, as requested by some of you.

    I took the opportunity of changing them to make some pictures and do a small tutorial since I had so many questions about this concept.
    First of all the flex plates consist of a series of carbon and plywood plates setup in layers without any gluing. This is important to get the most of the plywood characteristics ( shock absorbing capability ) and carbon fiber ( flexibility ).

    On the F-18F I have, in sequence from the bottom to the top :
    1 plywood plate of 3 mm ( the purpose of this one is to transmit the landing gear peak efforts to the carbon fiber plate without braking it )
    1 carbon plate of 2 mm ( this one is providing the spring effect and flexibility of the assembly )
    1 plywood plate of 6 mm ( absorbs the gear efforts and breaks in case of hard landing/huge loads, also holds the blind nuts)



    On the following picture, the bottom plate is the thick one that comes to the top in the plane.





    This composite plate shall not be glued to the formers neither because the damping effect comes form the layers being able to move relative to each other and relative to the formers.

    Here is a view of the composite plate in my hands:



    This as a consequence will enable you to fully service the gear from the bottom ( gear bays ) without having to remove the engine and saddle fuel tanks. This will save you a lot of time since the gear is the critical component on this jet and needs continuous maintenance.

    Here how the plates shall be changed ( note that only the thick plate will brake in case of problems so cut a couple of them initially):



    And the assembly back in position:




    The plates hold in position because of the indent made at each end.

    With this setup, I have to change the thick plate every 25 landings. This setup actually saves the whole structure from being damaged.


    Oli.

  24. #1649

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    RE: Flyeagle F18F

    oli have u done any articles in the next the jet mag ,just wandering if u had any air leeks on the gear door rams

  25. #1650
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    RE: Flyeagle F18F

    Yes Alan, I've had my door rams leaking one after the other. I've changed them on condition with Airpower cylinders. Today I think that I only have one original ram left...
    Oli.


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